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// Expected:
//   (clamp, ),
//   (perform, perform<$class T$>)
//   (perform3, perform3<$class T$, $int E$, $class D$>)

// note: clang understands if parameter is redundant

template<class T>
T clamp(T value, T a = 0.0, T b = 1.0)
{
    if (value < a)
        return a;
    if (value > b)
        return b;
    return value;
}

template<class T>
void perform()
{
}

template<class T, int E, class D>
void perform3()
{
}

void check()
{
    <<<<
}
